Một dây dẫn được uốn thành hình chữ nhật có các cạnh a= 8 (cm), b= 5 (cm), có dòng điện cường độ I 6 (A) chạy qua. Xác định vec tơ cảm ứng từ
tại tâm hình chữ nhật đó.

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s